Product Summary

Flange head fastener is a kind of fastener which has flange head. A flange is an external or internal rib, or rim for attachment to another object. A fastener is a device that mechanically joins or affixes two or more objects together. Fasteners can also be used to close a container such as a bag, a box, or an envelope; or they may involve keeping together the sides of an opening of flexible material, attaching a lid to a container.

The flange can have holes through which fasteners can be driven to hold the nut to the surface being fastened. Pre-attaching the flange to a surface provides a useful method of connecting something to it by means of a bolt or metal rod, which can be inserted into the stationary nut and tightened.